论文标题

后犯有限的单一政治多项式的有限属性

A finiteness property of postcritically finite unicritical polynomials

论文作者

Benedetto, Robert L., Ih, Su-Ion

论文摘要

令$ k $为一个数字字段,具有代数关闭$ \ bar {k} $,让$ s $是包含所有Archimedean的$ k $的有限位置。修复$ d \ geq 2 $和$α\ in \ bar {k} $,以使地图$ z \ mapsto z^d+α$在后批判性上不是有限的。假设在$α$上有技术假设,我们证明只有许多参数$ c \ in \ bar {k} $中的$ z \ mapsto z^d+c $是后有限的,$ c $是$ s $ s $ intection us s $ s $ intectial cuntection us v $ $(α)$。也就是说,在D度的单一政治多项式的模量空间中,只有许多PCF $ \ bar {k} $ - 合理点是$((α),s),$ - 积分。我们猜想没有技术假设,同一陈述是真实的。

Let $k$ be a number field with algebraic closure $\bar{k}$, and let $S$ be a finite set of places of $k$ containing all the archimedean ones. Fix $d\geq 2$ and $α\in \bar{k}$ such that the map $z\mapsto z^d+α$ is not postcritically finite. Assuming a technical hypothesis on $α$, we prove that there are only finitely many parameters $c\in\bar{k}$ for which $z\mapsto z^d+c$ is postcritically finite and for which $c$ is $S$-integral relative to $(α)$. That is, in the moduli space of unicritical polynomials of degree d, there are only finitely many PCF $\bar{k}$-rational points that are $((α),S)$-integral. We conjecture that the same statement is true without the technical hypothesis.

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